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共形阵机载火控雷达较常规平面阵机载火控雷达有着更少的负载、更好的空气动力性能及更大的扫描范围等优点。对机头共形阵火控雷达的子阵划分、方向图特性、杂波建模和杂波抑制等问题进行了研究。首先,给出了机头共形阵天线的数学模型和几何结构,依据火控雷达动目标检测需求确定了该天线工作方式和子阵合成方式,并分析了机头共形阵的天线方向图特性;然后,结合共形阵阵面结构特点分析了机头共形阵的杂波谱分布特性;最后,利用空时自适应处理(space time adaptive processing,STAP)方法对共形阵机载火控雷达进行了杂波抑制处理,并通过仿真分析了STAP方法的杂波抑制性能。
Conformal Array Airborne Fire Control Radar has less load, better aerodynamic performance and greater scanning range than conventional planar array airborne fire control radars. The subarray division, pattern characteristics, clutter modeling and clutter suppression of nose conformal array fire control radar are studied. First of all, the mathematical model and geometric structure of the nose conformal array antenna are given. Based on the requirements of moving target detection of the fire control radar, the working mode of the antenna and the method of subarray synthesis are determined. The antenna pattern characteristics of the nose conformal array ; Then, the conformal array’s confounding spectral distribution characteristics are analyzed based on the structural features of the conformal array; finally, the space-based adaptive processing (STAP) method is used to analyze the conformal array airborne fire control radar The clutter suppression processing is carried out, and the clutter suppression performance of the STAP method is analyzed by simulation.